KR20150035532A - Glass resin laminate - Google Patents

Abstract

A layer composed of the glass sheet 2 and a layer composed of the resin layer 3 and an adhesive layer 4 bonding the glass sheet 2 and the resin layer 3, , The adhesive layer (4) has a spectral transmittance of 90% or more in a wavelength region of at least 430 to 680 nm.

Description

Glass resin laminate {GLASS RESIN LAMINATE}

The present invention relates to a flat panel display such as a building, a vehicle, a frame, an exhibition case, a liquid crystal display or an organic EL display, a glass substrate for a device such as a solar cell, a lithium ion battery, a touch panel, The present invention relates to a glass material used for a cover glass of a device such as a light guide plate and an organic EL illumination, a glass material used for a medicine package, and the like. More specifically, the present invention relates to a glass material excellent in weatherability, light weight and visibility.

Since the glass plate is excellent in weather resistance, chemical resistance, scratch resistance, transparency and excellent light-emitting property, it can be used for a wide range of applications such as window frames for general buildings and high-rise buildings, skylights from roofs, picture frames and display cases, It is widely used in window frames.

However, the glass is a brittle material, and is vulnerable to physical impact and is easily broken. It is known that when a glass plate or high-speed water falls on a glass plate, the glass plate easily breaks and is easily broken even by a thermal shock.

In order to solve this problem, a large number of laminated bodies obtained by laminating a transparent resin material on a glass plate have been proposed. Although the transparent resin material is transparent and has good light fastness in common with glass which is an inorganic material, it has an advantage that the physical impact is stronger than that of glass. On the other hand, it has poor chemical resistance, weather resistance and scratch resistance than glass, It has the shortcoming that it does not reach to this glass and lacks of directing of quality sense. For example, in the following Patent Document 1, a laminated glass (glass resin laminate) composed of glass / polyvinyl butyral / polycarbonate / polyvinyl butyral / glass laminated in order has been proposed. Patent Document 1 discloses a technique in which a glass plate weak in physical impact is supported by a transparent resin material to prevent breakage and scattering of the glass plate and a transparent resin material is sandwiched by a glass plate having excellent weather resistance and scratch resistance, Each advantage is complemented by disadvantages of glass plates and transparent resin materials.

Japanese Patent Application Laid-Open No. 6-915

However, when the glass laminate of Patent Document 1 was observed from the front, it was colorless and transparent. However, when observed from the oblique direction (direction having an angle), the glass laminate sometimes appeared to be colored with a slight yellow color. Further, in the case where a glass laminate is used as a backlight for a liquid crystal display or a light guide plate for a billboard or a guide plate by irradiating light from the end of the glass laminate described in Patent Document 1 by a light source such as edge light, , Yellow, and perceived.

On the other hand, resin materials are rich in variations of color as compared with glass, and various materials such as transparent colored products and opaque colored products are commercialized from the point of colorlessness and transparency and sold and used in various places. These resin materials are used not only as windows having transparency, but also as covers and cases for decorative articles for colored articles. In this case, unlike the original color tone of the resin material, there is a problem that it exhibits a slightly yellow color as described above.

Disclosure of the Invention The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a resin composition which prevents yellow color, So as to obtain a laminate complemented with a sheet.

As a result of intensive studies, the inventors of the present invention have found that even when the visible light transmittance of the transparent adhesive layer exceeds 90%, the transmittance at the short wavelength side end portion (380 nm to 450 nm) or the long wavelength side end portion (650 nm to 780 nm) %, Whereby it was found that the glass resin laminate was observed with a color tone. The transparent adhesive tends to have a low transmittance particularly on the short wavelength side, and the glass resin laminate is observed to be yellow due to this influence, and thus the present invention has been accomplished.

The invention according to claim 1 is a glass resin laminate comprising a layer made of a glass sheet, a layer composed of a resin layer, and an adhesive layer for bonding the glass sheet and the resin layer, , And the adhesive layer has a spectral transmittance of 90% or more in a wavelength region of at least 430 nm to 680 nm. Here, the spectral transmittance means the sum of the parallel light transmittance and the diffuse light transmittance at each wavelength. In addition, when the adhesive layer has a spectral transmittance of 90% or more in a wavelength region of at least 430 nm to 680 nm, it means the spectral transmittance at the thickness when the thickness of the adhesive layer is changed. When the adhesive layer is present in two or more layers, it means that the spectral transmittance in a state where the thicknesses of all layers are added is 90% or more.

According to a second aspect of the present invention, there is provided a glass-polymer laminate as set forth in the first aspect, wherein the resin layer of one layer interposed between the glass sheet of both outermost layers and the glass sheet of both outermost layers, And a five-layer structure composed of two adhesive layers for adhering the glass sheet and the resin layer.

According to a third aspect of the present invention, in the glass resin laminate according to the first or second aspect, the resin layer is transparent. Here, the resin layer is transparent means that the visible light transmittance is 90% or more. Refers to the visible light transmittance at the thickness when the thickness of the resin layer is changed and the visible light transmittance in the state where the thickness of all the resin layers is added when the resin layer exists in two or more layers is 90% Or more.

According to a fourth aspect of the present invention, in the glass resin laminate according to any one of the first to third aspects, the thickness of the adhesive layer is 50 to 800 m.

According to a fifth aspect of the present invention, in the glass resin laminate according to any one of the first to fourth aspects, the glass sheet is a non-alkali glass.

According to a sixth aspect of the present invention, in the glass resin laminate according to any one of the first to fifth aspects, the glass sheet is manufactured by an overflow down-draw method.

According to a seventh aspect of the present invention, in the glass resin laminate according to any one of the first to sixth aspects, the resin layer is a polycarbonate material or an acrylic material.

The invention according to claim 8 is the glass-resin laminate according to any one of claims 1 to 7, wherein the thickness of the glass sheet is 100 to 300 mu m.

(Effects of the Invention)

According to a first aspect of the present invention, there is provided a glass-ceramic laminate comprising a layer made of a glass sheet, a layer made of a resin layer, and an adhesive layer for bonding the glass sheet and the resin layer, It is possible to prevent the glass resin laminate from exhibiting a yellow color on the surface having a spectral transmittance of 90% or more in a wavelength region of at least 430 nm to 680 nm and to prevent the original color tone of the resin layer from being impaired, The color characteristics of the resin layer can be sufficiently exerted.

According to a second aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: adhering one sheet of the above-mentioned glass sheet of the outermost layer to the glass sheet of both outermost layers; It is possible to prevent the resin layer, which has poor weather resistance and scratch resistance, from being exposed to the external environment by sandwiching the resin layer with the glass sheet having excellent weatherability and scratch resistance on the surface having the five-layer structure composed of the two adhesive layers. Further, a glass layer excellent in texture and texture can be formed as the outermost layer.

According to the invention as set forth in claim 3, the resin layer can be made of a glass resin laminate which is colorless and highly transparent on the transparent surface.

According to the fourth aspect of the present invention, the difference in thermal expansion between the glass sheet and the resin layer can be absorbed by the adhesive layer while preventing the glass resin laminate from exhibiting yellow color on the surface having a thickness of 50 to 800 탆, It is possible to prevent the sheet and the resin layer from being peeled off due to thermal expansion.

According to the invention as set forth in claim 5, the glass sheet has improved weatherability and chemical resistance of the glass sheet on the surface which is an alkali-free glass, so that it can be made into a glass resin laminate suitable for long-term use.

According to the invention as set forth in claim 6, the glass sheet can be manufactured in a large amount and at a low cost on a surface produced by the overflow down-draw method. The glass sheet produced by the overflow down-draw method does not need to be polished or ground.

According to the invention as set forth in claim 7, the resin layer is excellent in transparency in terms of a polycarbonate material or an acrylic material, and can be a glass resin laminate having excellent light-guiding properties particularly when an acrylic material is used.

According to the eighth aspect of the present invention, the glass sheet laminate can be obtained in which the thickness of the glass sheet is 100 to 300 占 퐉.

FIG. 1A is a cross-sectional view of a glass resin laminate according to the present invention, showing a glass resin laminate having a three-layer structure. FIG.
Fig. 1B is a cross-sectional view of a glass-resin laminate according to the present invention, showing a glass-resin laminate having a five-layer structure.
Fig. 2 is an explanatory diagram of an apparatus for producing a glass sheet.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a glass resin laminate according to the present invention will be described with reference to the drawings.

As shown in Fig. 1A, the glass sheet laminate 1 according to the present invention is such that the glass sheet 2 and the resin layer 3 are adhered to each other with an adhesive layer 4. Fig.

As the glass sheet 2, silicate glass is used, and silica glass, borosilicate glass, soda lime glass, and aluminosilicate glass are preferably used, and most preferably, alkali-free glass is used. In general, when the glass sheet 2 contains an alkali component, when the glass sheet 2 is continuously used for a long period of time in a state exposed to the external environment, the cation is detached from the surface and the so- There is a fear that the phenomenon of blowing may occur and that the glass sheet 2 may become structurally roughened and the transmittance of the glass sheet 2 may deteriorate. Here, the alkali-free glass is glass which does not substantially contain an alkali component (alkali metal oxide), specifically, a glass having a weight ratio of alkali component of 1000 ppm or less. The weight ratio of the alkali component in the present invention is preferably 500 ppm or less, and more preferably 300 ppm or less. As the glass sheet 2, a chemical strengthening glass or a physical strengthening glass may be used.

The thickness of the glass sheet 2 is preferably 10 占 퐉 to 1000 占 퐉, more preferably 50 占 퐉 to 500 占 퐉, and most preferably 100 占 퐉 to 300 占 퐉. The greater the thickness of the glass sheet, the higher the strength of the glass-resin laminate. On the other hand, the thinner the thickness of the glass sheet, the smaller the weight in the thickness of the glass-ceramic laminate. It is preferable that the thickness of the glass sheet 2 is smaller than the thickness of the resin layer 3. This reduces the proportion of the glass sheet 2 in the glass-ceramic laminate 1, so that the weight of the glass-ceramic laminate 1 can be reduced. When a chemical strengthening glass is used as the glass sheet 2, the thickness is preferably 300 to 1000 占 퐉.

It is preferable that the density of the glass sheet 2 is low. As a result, the weight of the glass sheet 2 can be reduced, and the weight of the glass-fiber laminate 1 can be reduced. Concretely, the density of the glass sheet 2 is preferably 2.6 g / cm ³ or less, and more preferably 2.5 g / cm ³ or less.

As shown in Fig. 2, the glass sheet 2 used in the present invention is preferably formed by an overflow down-draw method. As a result, the glass sheet 2 having excellent surface quality can be produced in large quantities and at low cost. The overflow down-draw method is a molding method in which both surfaces of the glass sheet 2 are not in contact with the forming member at the time of molding, and both surfaces (light-projecting surfaces) of the obtained glass sheet 2 become non-polished surfaces, A high surface quality can be obtained even if it is not required. This makes it possible to laminate the glass sheet 2 and the resin layer 3 accurately and precisely through the adhesive layer 4.

A molding body 51 having an outer surface shape in cross section on the wedge side is provided in the interior of the molding apparatus 5 and the melted glass (molten glass) is supplied to the molding body 51 in a melting furnace And is overflowed from the top of the molded body 51. Then, the overflowing molten glass joins the lower end along both sides of the wedge-shaped cross section of the molded body 51, so that the molding of the glass ribbon G is started from the molten glass. The glass ribbon G immediately after joining to the lower end of the molded body 51 is stretched downwardly while being shrunk in the width direction by the cooling roller 52 to be thinned to a predetermined thickness. Subsequently, the glass ribbon G having the predetermined thickness is sent to an annealer roller 53 to gradually cool the glass ribbon G in the gradual cooling furnace (annealer) to remove thermal deformation of the glass ribbon G, (G) is sufficiently cooled to a temperature of about room temperature. The glass ribbon G that has passed through the gradual cooling furnace is cut to a predetermined size by a cutting device (not shown) existing below the molding device 5, and the glass sheet 2 is molded.

The resin layer 3 is not particularly limited such as colored or colorless, transparent or non-transparent, and includes, for example, polyethylene, polyvinyl chloride, polyethylene terephthalate, polyvinylidene chloride, polypropylene, polyvinyl alcohol, Polystyrene, polyacrylonitrile, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-methacrylic acid copolymer, acryl, polycarbonate and the like can be used. Particularly, since it is excellent in transparency, it is preferable to use acrylic or polycarbonate. For applications requiring designability, it is preferable to use acrylic which can be selected from various colors.

The thickness of the resin layer 3 can be appropriately set and selected from the thickness of the glass sheet 2 to be used and the intended thickness of the glass-ceramic laminate 1 and the like. It is preferable that the glass resin laminate 1 is not warped when the glass laminate 1 is used in a window of a building or the like so that the transparent resin layer 3 has a thickness enough to support the glass sheet 2 .

The resin layer 3 may be formed into a curved surface such as a concave surface or a convex surface. In this case, the glass sheet 2 may be bent according to the curved shape of the resin layer 3, and the shape of the resin layer 3 is constrained by the glass sheet 2 whose shape is fixed in a curved shape The effect of reinforcing the resin layer 3 by the glass sheet 2 becomes remarkable. When the glass sheet 2 having a thickness of 10 mu m to 300 mu m is used, since the glass sheet 2 is deformed following the curved surface of the resin layer 3, the glass sheet 2 is not bent The glass-fiber laminate 1 can be produced. Particularly, in the case where the resin layer 3 is formed into a curved surface of a concave surface, the glass sheet 2 is formed on the surface of the glass sheet 2 by following the curved surface of the resin layer 3 formed into the concave surface A compressive stress is formed, and as a whole the glass resin laminate 1, excellent impact absorbability is obtained.

The adhesive layer (4) bonds the glass sheet (2) and the resin layer (3). The adhesive layer 4 needs to have a spectral transmittance of 90% or more in a wavelength region of at least 430 nm to 680 nm. As a result, the color characteristics of the resin layer can be sufficiently exhibited without damaging the original color tone of the resin layer (3). If the spectral transmittance of the adhesive layer 4 in a short wavelength region of visible light of less than 90% is less than 90%, the glass-fiber laminate 1 may be observed in a state showing yellow depending on the application. The adhesive layer 4 preferably has a spectral transmittance of 92% or more in a wavelength region of 430 nm to 680 nm, and is most preferably 94% or more.

The thickness of the adhesive layer 4 is preferably 25 占 퐉 to 1000 占 퐉, more preferably 50 占 퐉 to 800 占 퐉, and still more preferably 50 占 퐉 to 500 占 퐉. As the thickness of the adhesive layer 4 is larger, the difference in elongation and shrinkage due to the difference in thermal expansion between the resin layer 3 and the glass sheet 2 can be absorbed, but the spectral transmittance in the wavelength region of 430 nm to 680 nm is poor. On the other hand, the smaller the thickness of the adhesive layer 4, the higher the spectral transmittance in the wavelength range of 430 nm to 680 nm, but it is difficult to absorb the difference in shrinkage due to the difference in thermal expansion between the resin layer 3 and the glass sheet 2 . Therefore, the thickness of the resin layer 3 is most preferably 100 to 500 mu m. In the present invention, even if the thickness of the adhesive layer 4 is increased, the spectral transmittance in the wavelength region of 430 nm to 680 nm is not lower than 90%.

The material of the adhesive layer 4 is not particularly limited as long as the spectral transmittance at a wavelength of 430 nm to 680 nm satisfies 90% or more, and a double-faced pressure-sensitive adhesive sheet, a thermoplastic adhesive sheet, a thermally crosslinkable adhesive sheet, And may be bonded using, for example, an optical transparent pressure sensitive adhesive sheet, EVA, TPU, PVB, ionoplast resin, acrylic thermoplastic adhesive sheet, ultraviolet curing adhesive, thermosetting adhesive, room temperature curing adhesive or the like. When an adhesive is used, it is preferable to use an adhesive showing a transparent state after bonding. Further, if the adhesive layer 4 has ultraviolet shielding property (ultraviolet absorption), it is possible to prevent the resin layer 3 from being deteriorated by ultraviolet rays.

The adhesive layer 4 preferably has a spectral transmittance of 90% to 94% or more in a wavelength region of 410 nm to 700 nm, or a spectral transmittance of 90% to 94% or more in a wavelength region of 380 nm to 780 nm. Most transparent and most preferred

The adhesive layer 4 preferably has haze (haze) of 2% or less. As a result, when a material having high transparency such as acrylic or polycarbonate is used as the resin layer 3, the glass-ceramic laminate 1 having high transparency can be obtained. The haze of the adhesive layer 4 is more preferably 1% or less, and still more preferably 0.5% or less.

As shown in Fig. 1B, the glass resin laminate 1 according to the present invention is preferably a five-layer structure composed of a glass sheet / adhesive layer / resin layer / adhesive layer / glass sheet. This makes it possible to prevent the resin layer 3, which is poor in weather resistance and scratch resistance, from being exposed to the external environment by sandwiching the resin layer 3 with the glass sheet 2 having excellent weather resistance and scratch resistance. Further, the glass sheet 2 excellent in texture and texture can be used as the outermost layer.

The thickness of the resin layer 3 is preferably equal to or greater than the thickness of the glass sheets 21 and 22 and more preferably equal to or more than three times the thickness of the glass sheets 21 and 22. [ This increases the proportion of the transparent resin layer 3 in the glass resin laminate 1 so that the total weight of the glass resin laminate 1 can be further reduced and the glass resin laminate 1 ) Can be made lightweight. When the thicknesses of the glass sheets 21 and 22 are different, the thickness of the transparent resin layer 3 is preferably at least three times the thickness of the glass sheet having the largest thickness. The thickness of the transparent resin layer 3 is more preferably not less than 10 times the thickness of the glass sheets 21 and 22, and most preferably not less than 20 times.

The glass sheet 21 and the glass sheet 22 may be made of the same kind of glass material or different kinds of glass materials. For example, in the case of using the glass-fiber laminate 1 as a window for a building or the like, an excellent alkali-free glass is used for the glass sheet 21 on the side exposed to the external environment due to weather resistance, A soda lime glass or the like may be used for the glass sheet 22 on the side of the glass sheet. Further, similarly to the adhesive layer 4, a more transparent glass sheet is required for visible light, and it is preferable that the spectral transmittance in a wavelength region of at least 430 nm to 680 nm is 90% or more. Thereby, the original color tone of the resin layer 3 is not damaged, and the color characteristic of the resin layer can be sufficiently exerted.

The glass sheets 21 and 22 may have the same thickness or different thicknesses. For example, in the case of using the glass-fiber laminate 1 in a window for a building or the like, the thickness of the glass sheet 21 on the side exposed to the external environment is set to be thick (for example, 100 m) The thickness of the glass sheet 22 on the inner environment side may be set to be thin (for example, 50 mu m).

The present invention is not limited to the above-described embodiments, but can be carried out in various forms. For example, in the above-described embodiments, the glass-resin laminate having a three-layer structure or a five-layer structure has been described, but a glass-resin laminate having a seven- or more-layer structure may also be used.

( Example )

Hereinafter, the glass resin laminate of the present invention will be described in detail based on examples, but the present invention is not limited to these examples.

(Example 1) A rectangular glass sheet of 300 mm in length, 300 mm in width and 100 m in thickness was prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. The product's non-alkali glass was used. The glass sheet formed by the overflow down draw method was used as it was in the uncured state. As a resin layer, a rectangular milky white translucent polycarbonate plate (manufactured by Takiron Co., Ltd.) having a length of 300 mm, a width of 300 mm and a thickness of 1 mm was prepared. On one side of the resin layer, 150 mu m of a thermoplastic sheet (EVA) was laminated as an adhesive layer, and then a glass sheet was laminated to produce a glass-resin laminate having a three-layer structure. The spectral transmittance at the wavelength of 410 nm to 700 nm of the adhesive layer was 90% or more at each wavelength. In addition, the adhesive layer has an ultraviolet absorber added thereto and has an ultraviolet shielding performance. Observation of the resultant glass-resin laminate from an oblique direction at 45 ° showed that the translucency of the milky white color of the polycarbonate plate was reproduced as it was and no yellow color was observed. Further, when the glass surface side of the obtained glass-ceramic laminate was subjected to a weather resistance test with a xenon weatherometer for 1000 hours, the polycarbonate did not deteriorate. This embodiment can be preferably used as an illumination cover.

(Example 2) Two glass sheets of a rectangular shape having a length of 600 mm, a width of 600 mm, and a thickness of 700 탆 were prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. The product's non-alkali glass was used. The glass sheet formed by the overflow down draw method was used as it was in the uncured state. As the resin layer, a rectangular opaque white acrylic plate (manufactured by Mitsubishi Rayon Co., Ltd.) having a length of 600 mm, a width of 600 mm and a thickness of 6 mm was prepared. On both sides of the resin layer, a 400 탆 thermoplastic sheet (EVA) was laminated as an adhesive layer, and then a resin layer was stuck with two glass sheets to produce a glass-resin laminate having a five-layer structure. The spectral transmittance at the wavelength of 430 nm to 680 nm of the adhesive layer was 90% or more at each wavelength. Observation of the obtained glass-resin laminate from the oblique direction at 45 degrees revealed that the white color of the acrylic plate was reproduced as it was and did not show a yellow color. The present embodiment can be used preferably as a display case since white color of acrylic can be reproduced, acrylic is protected by a glass sheet, scratch resistance is excellent, and acrylic has durability against ultraviolet rays.

(Example 3) Two sheets of rectangular glass sheets of 500 mm in length, 500 mm in width and 200 m in thickness were prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. The product's non-alkali glass was used. The glass sheet formed by the overflow down draw method was used as it was in the uncured state. As a resin layer, a rectangular colorless transparent acrylic plate (manufactured by Mitsubishi Rayon Co., Ltd.) having a length of 500 mm, a width of 500 mm and a thickness of 2 mm was prepared. On both sides of the resin layer, an acrylic optical transparent double-sided adhesive sheet of 200 mu m was laminated as an adhesive layer, and then the resin layer was sandwiched with two glass sheets to produce a glass-resin laminate having a five-layer structure. The spectral transmittance at the wavelength of 420 nm to 780 nm of the adhesive layer was 91% or more at each wavelength. Observation of the obtained glass-resin laminate from the oblique direction at 45 degrees revealed that the transparency of the acrylic plate was reproduced as it was and no yellow color was observed. Since acryl itself has ultraviolet durability, it can be preferably used as a highly transparent window.

(Example 4) Two rectangular glass sheets of 600 mm in length, 600 mm in width and 100 탆 in thickness were prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. The product's non-alkali glass was used. The glass sheet formed by the overflow down draw method was used as it was in the uncured state. As a resin layer, a colorless transparent acrylic plate (manufactured by Mitsubishi Rayon Co., Ltd.) having a diameter of 600 mm, a width of 600 mm, a thickness of 4 mm and a radius of R3000 mm was prepared. A glass-fiber laminate having a five-layer structure was produced by stacking 350 μm of an acrylic optical transparent double-sided adhesive sheet as an adhesive layer on both sides of a resin layer and arranging two glass sheets so as to follow the curved surface of the resin layer, did. The spectral transmittance of the adhesive layer at a wavelength of 400 nm to 780 nm was 92% or more at each wavelength. Observation of the obtained glass-resin laminate from the oblique direction at 45 ° showed that the transparency of the acrylic plate was reproduced as it was and no yellow color was observed. Since the acrylic plate, the glass sheet and the adhesive layer are highly transparent, they can be preferably used as an exhibition case including a curved surface.

(Example 5) Two glass sheets of a rectangular shape having a length of 600 mm, a width of 600 mm, and a thickness of 500 탆 were prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. I used the product soda glass. The glass sheet formed by the overflow down draw method was bent in a cylindrical shape of R1000 mm to perform molding. As a resin layer, a colorless transparent polycarbonate plate (product of Takiron Co., Ltd.) in the form of a cylinder having a length of 600 mm, a width of 600 mm, a thickness of 6 mm and a length of R2000 mm was prepared. On both sides of the resin layer, a thermoplastic sheet (TPU) of 400 mu m was laminated as an adhesive layer, and then the resin layer was sandwiched between two glass sheets to produce a glass-resin laminate having a five-layer structure. The spectral transmittance at the wavelength of 430 nm to 700 nm of the adhesive layer was 90% or more at each wavelength. Further, the adhesive layer has an ultraviolet absorbing agent added thereto, and has ultraviolet ray shielding performance. Observation of the resultant glass-resin laminate from the oblique direction at 45 ° showed that the transparency of the polycarbonate plate was reproduced as it was and no yellow color was observed. Further, the obtained glass-fiber laminate was subjected to a weather resistance test with a xenon weatherometer for 1000 hours, and the polycarbonate did not deteriorate. This embodiment can be preferably used as a safety window having impact resistance.

(Comparative Example 1) Two rectangular glass sheets having a length of 500 mm, a width of 500 mm and a thickness of 200 탆 were prepared. The glass sheet is available from Nippon Electric Glass Co., Ltd. The product's non-alkali glass was used. The glass sheet formed by the overflow down draw method was used as it was in the uncured state. As a resin layer, a rectangular colorless transparent acrylic plate (manufactured by Mitsubishi Rayon Co., Ltd.) having a length of 500 mm, a width of 500 mm and a thickness of 6 mm was prepared. On both sides of the resin layer, a thermoplastic sheet (TPU) of 400 mu m was laminated as an adhesive layer, and then the resin layer was sandwiched with two glass sheets to produce a five-layered glass resin laminate. The spectral transmittance at the wavelength of 430 nm to 680 nm of the adhesive layer was less than 90% in each wavelength region, and the maximum value was 88%. Observation of the obtained glass-resin laminate from the oblique direction at 45 degrees revealed that it was yellow.

(Industrial availability)

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a window panel for a general building or a high-rise building, a skylight window from a roof, a covering material for agricultural greenhouses, Guide plates and the like.

1: glass resin laminate 2: glass sheet
3: resin layer 4: adhesive layer

Claims (8)

A glass resin laminate comprising a glass sheet, a layer composed of a resin layer, and an adhesive layer for bonding the glass sheet and the resin layer, wherein the glass layer laminate has at least three or more layers,
Wherein the adhesive layer has a spectral transmittance of 90% or more in a wavelength region of at least 430 nm to 680 nm. The method according to claim 1,
The two layers of the adhesive layer that adhere the glass sheet of the outermost layer to the glass sheet of the outermost layer and the glass sheet of the opposite outermost layer and the glass sheet of the outermost layer, Wherein the glass substrate has a five-layer structure. 3. The method according to claim 1 or 2,
Wherein the resin layer is transparent. 4. The method according to any one of claims 1 to 3,
Wherein the thickness of the adhesive layer is 50 to 800 占 퐉. 5. The method according to any one of claims 1 to 4,
Wherein the glass sheet is an alkali-free glass. 6. The method according to any one of claims 1 to 5,
Wherein the glass sheet is manufactured by an overflow down-draw method. 7. The method according to any one of claims 1 to 6,
Wherein the resin layer is a polycarbonate material or an acrylic material. 8. The method according to any one of claims 1 to 7,
Wherein the glass sheet has a thickness of 100 to 300 占 퐉.

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